A histogram is a chart that shows frequencies for equal width intervals of values of a metric variable. A company wants to know how monthly salaries are distributed over 1,110 employees having operational, middle or higher management level jobs. The screenshot below shows what their raw data look like.
The snowflake schema is a variation of the star schema, featuring normalization of dimension tables. In computing, a snowflake schema is a logical arrangement of tables in a multidimensional database such that the entity relationship diagram resembles a snowflake shape. The snowflake schema is represented by centralized fact tables which are connected to multiple dimensions..
snowflake noun [ C ] (PIECE OF SNOW) âº 1  a small piece of snow that falls from the sky. âº 2  informal disapproving a way of referring to a young person who is considered by some people to be too easily upset and offended. âº 3  a single piece of snow that falls from the sky.